<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>活动管理</el-breadcrumb-item>
            <el-breadcrumb-item>活动列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card>
            <el-alert
                    title="注意：只允许选择三级分类"
                    type="warning"
                    show-icon
                    :closable="false">
            </el-alert>
            <el-row style="margin: 15px 0">
                <el-col>
                    选择商品分类：
                    <el-cascader
                            expand-trigger="hover"
                            :options="cateList"
                            :props="cateProps"
                            v-model="selectedCateKeys"
                            @change="handleChange">
                    </el-cascader>
                </el-col>
            </el-row>
            <el-tabs v-model="activeName" @tab-click="handleTabClick">
                <el-tab-pane label="动态参数" name="many">
                    <el-button type="primary" size="mini" :disabled="isBtnDisable" @click="addDialogVisible=true">添加参数
                    </el-button>
                    <el-table :data="manyTableDate" stripe border>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable
                                        @close="handleClose(i,scope.row)">{{item}}
                                </el-tag>
                                <el-input
                                        class="input-new-tag"
                                        v-if="scope.row.inputVisible"
                                        v-model="scope.row.inputValue"
                                        ref="saveTagInput"
                                        size="small"
                                        @keyup.enter.native="handleInputConfirm(scope.row)"
                                        @blur="handleInputConfirm(scope.row)">
                                </el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+
                                    添加新属性
                                </el-button>
                            </template>
                        </el-table-column>
                        <el-table-column
                                type="index">
                        </el-table-column>
                        <el-table-column
                                label="参数名称"
                                prop="attr_name">
                        </el-table-column>
                        <el-table-column
                                label="操作">
                            <template slot-scope="scope">
                                <el-button type="primary" icon="el-icon-search" size="mini"
                                           @click="showEditDialog(scope.row.attr_id)">编辑
                                </el-button>
                                <el-button type="danger" icon="el-icon-delete" size="mini"
                                           @click="removeParams(scope.row.attr_id)">删除
                                </el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-tab-pane>
                <el-tab-pane label="静态属性" name="only">
                    <el-button type="primary" size="mini" :disabled="isBtnDisable" @click="addDialogVisible=true">添加属性
                    </el-button>
                    <el-table :data="onlyTableDate" stripe border>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable
                                        @close="handleClose(i,scope.row)">{{item}}
                                </el-tag>
                                <el-input
                                        class="input-new-tag"
                                        v-if="scope.row.inputVisible"
                                        v-model="scope.row.inputValue"
                                        ref="saveTagInput"
                                        size="small"
                                        @keyup.enter.native="handleInputConfirm(scope.row)"
                                        @blur="handleInputConfirm(scope.row)">
                                </el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+
                                    添加新属性
                                </el-button>
                            </template>
                        </el-table-column>
                        <el-table-column
                                type="index">
                        </el-table-column>
                        <el-table-column
                                label="属性名称"
                                prop="attr_name">
                        </el-table-column>
                        <el-table-column
                                label="操作">
                            <template slot-scope="scope">
                                <el-button type="primary" icon="el-icon-search" size="mini"
                                           @click="showEditDialog(scope.row.attr_id)">编辑
                                </el-button>
                                <el-button type="danger" icon="el-icon-delete" size="mini"
                                           @click="removeParams(scope.row.attr_id)">删除
                                </el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-tab-pane>
            </el-tabs>

        </el-card>

        <el-dialog
                :title='"添加"+titleText'
                :visible.sync="addDialogVisible"
                width="50%"
                @close="addDialogClose">
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
                <el-form-item :label="titleText" prop="attr_name">
                    <el-input v-model="addForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
        </el-dialog>

        <el-dialog
                :title='"修改"+titleText'
                :visible.sync="editDialogVisible"
                width="50%"
                @close="editDialogClose">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
                <el-form-item :label="titleText" prop="attr_name">
                    <el-input v-model="editForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams">确 定</el-button>
  </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "Params",
        data() {
            return {
                cateList: [],
                cateProps: {
                    value: 'cat_id',
                    label: 'cat_name',
                    children: 'children'
                },
                selectedCateKeys: [],
                activeName: 'many',
                manyTableDate: [],
                onlyTableDate: [],
                addDialogVisible: false,
                addForm: {
                    attr_name: '',
                },
                addFormRules: {
                    attr_name: [
                        {required: true, message: '请输入参数名称', trigger: 'blur'},
                    ]
                },
                editDialogVisible: false,
                editForm: {},
                editFormRules: {
                    attr_name: [
                        {required: true, message: '请输入参数名称', trigger: 'blur'},
                    ]
                },
                inputVisible: false,
                inputValue: '',
            }
        },

        created() {
            this.getCateList();
        },

        methods: {
            async getCateList() {
                const {data: res} = await this.$http.get('categories');
                if (res.meta.status != 200) {
                    this.$message.error("获取商品列表错误！")
                }
                this.cateList = res.data;
            },

            handleChange() {
                this.getParamsData();
            },

            handleTabClick() {
                this.getParamsData();
            },

            async getParamsData() {
                if (this.selectedCateKeys.length != 3) {
                    this.selectedCateKeys = [];
                    this.manyTableDate=[];
                    this.onlyTableDate=[];
                    return;
                }

                const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {params: {sel: this.activeName}});
                if (res.meta.status != 200) {
                    this.$message.error("获取参数列表失败！")
                }

                res.data.forEach(item => {
                    item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : [];
                    item.inputVisible = false;
                    item.inputValue = '';
                });


                if (this.activeName == 'many') {
                    this.manyTableDate = res.data;
                } else {
                    this.onlyTableDate = res.data;
                }
            },

            addDialogClose() {
                this.$refs.addFormRef.resetFields();
            },

            addParams() {
                this.$refs.addFormRef.validate(async valid => {
                    if (!valid) {
                        return;
                    }
                    const {data: res} = await this.$http.post(`categories/${this.cateId}/attributes`,
                        {attr_name: this.addForm.attr_name, attr_sel: this.activeName});
                    if (res.meta.status != 201) {
                        return this.$message.error('添加失败');
                    }
                    this.$message.success('添加成功');
                    this.addDialogVisible = false;
                    this.getParamsData();
                });
            },

            async showEditDialog(attr_id) {
                this.editDialogVisible = true;
                const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`, {params: {attr_sel: this.activeName}});
                if (res.meta.status != 200) {
                    return this.$message.error('获取参数失败');
                }
                this.editForm = res.data;
                console.log(this.editForm)
            },

            editDialogClose() {
                this.$refs.editFormRef.resetFields();
            },

            editParams() {
                this.$refs.editFormRef.validate(async valid => {
                    if (!valid) {
                        return;
                    }
                    const {data: res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
                        {attr_name: this.editForm.attr_name, attr_sel: this.activeName});
                    if (res.meta.status != 200) {
                        return this.$message.error('修改失败');
                    }
                    this.$message.success('修改成功');
                    this.getParamsData();
                    this.editDialogVisible = false;
                })
            },

            removeParams(attr_id) {
                this.$confirm('此操作将永久删除该属性, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(async () => {
                    const {data: res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`);
                    if (res.meta.status != 200) {
                        return this.$message.error('删除失败');
                    }
                    this.$message({
                        type: 'success',
                        message: '删除成功!'
                    });
                    this.getParamsData();
                }).catch(() => {
                    this.$message({
                        type: 'info',
                        message: '已取消删除'
                    });
                });
            },

            async saveAttr(row) {
                const {data: res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,
                    {attr_name: row.attr_name, attr_sel: row.attr_sel, attr_vals: row.attr_vals.join(' ')});
                if (res.meta.status != 200) {
                    this.$message.error('修改失败');
                }
                this.$message.success('修改成功');
            },

            async handleInputConfirm(row) {
                if (row.inputValue.trim().length == 0) {
                    row.inputValue = '';
                    row.inputVisible = false;
                    return;
                }
                row.attr_vals.push(row.inputValue.trim());
                row.inputValue = '';
                row.inputVisible = false;
                this.saveAttr(row);
            },

            showInput(row) {
                row.inputVisible = true;
                this.$nextTick(() => {
                    this.$refs.saveTagInput.$refs.input.focus();
                });
            },

            handleClose(i, row) {
                row.attr_vals.splice(i, 1);
                this.saveAttr(row);
            }

        },
        computed: {
            isBtnDisable() {
                if (this.selectedCateKeys.length != 3) {
                    return true;
                } else {
                    return false;
                }
            },

            cateId() {
                if (this.selectedCateKeys.length == 3) {
                    return this.selectedCateKeys[2];
                } else {
                    return null;
                }
            },

            titleText() {
                if (this.activeName == 'many') {
                    return '动态参数';
                } else {
                    return '静态属性';
                }
            }
        }

    }
</script>

<style scoped lang="less">
    .input-new-tag {
        width: 200px;
    }
</style>